S-91802A002 1/4"-20 x 7/8" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Exceptional holding power from 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance under heavy loads
• Optimized installation efficiency with No. 3 Phillips drive and standard oval head profile for secure tool engagement
• Enhanced material compatibility through UNC coarse threading with Class 2A fit for superior grip in various substrates
• Flush mounting capability with 82° countersink angle and oval head design for clean, professional finishes
• Full-thread engagement along the entire 7/8" length for maximum fastening security and load distribution
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards for global applications

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these passivated 18-8 stainless steel oval head screws provide critical corrosion resistance where moisture, chemicals, or outdoor exposure threaten fastener integrity. The combination of 80,000 psi tensile strength and Rockwell B80 hardness ensures reliable performance in structural assemblies, machinery, and equipment subjected to vibration and dynamic loads. The fully threaded UNC coarse spacing design delivers superior pull-out resistance in metal, wood, and composite materials, while the oval head with 82° countersink creates seamless flush mounting in precision applications. These Phillips drive screws are particularly valuable in manufacturing, automotive, and marine industries where both mechanical performance and aesthetic finish requirements must be met simultaneously.

Specification Summary & Compliance

This 1/4"-20 x 7/8" oval head screw features precision UNC coarse threads with Class 2A thread fit for consistent engagement and reliable performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets and industrial applications.